For a description of this member, see IConvertible.ToInt64.
The resulting integer value is less than MinValue or greater than MaxValue.
This member is an explicit interface member implementation. It can be used only when the Decimal instance is cast to an IConvertible interface. The recommended alternative is to call either the Decimal.ToInt64 method or the Convert.ToInt64 method.
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.